class_docstr: ```
  Image preprocessing
  ```
code: def get_preprocessor(self):
      return self.datagen
  
file_path: ktrain/ktrain/vision/preprocessor.py
imports: from ..None import utils
  from ..imports import *
  from ..preprocessor import Preprocessor
label_desc: Use image node_id 2 for calling the ImagePreprocessor obj's underlying member method code with example usage: obj.get_preprocessor() and returns: self